Xj8 2003 with pending rpm between 200 rpm it shows in rpm meter and i can feel it when i drive 1100 to 1200 rpm. What can it be?

 

What is "pending rpm"?

 

i am not so God in English....engine speed is pending by it self in 1100 to 1200 rpm when i drive

 

Do you mean the RPM is hunting (jakt)?

 

When i drive in 60km speed the engine rpm is not stable it is pending betwen 1100 to 1200 by it self

 

OK... Varying.

Might be the torque converter.

You could watch the fuel trims in case they give any clue.

 

Hello Micke,

Welcome to the Jaguar Forums! It's great to have you with us.

A number of issues can cause the engine rpm to be unstable. My first suggestion would be to have the car scanned for any stored diagnostic trouble codes or "fault codes." The computers may have stored codes that will help diagnose the cause of your variation in rpm.

If any codes are stored, please post them here exactly as they appear with the letter and four numbers (for example, P0171, P0743) and we will try to help.

Cheers,

Don

 

Does this "hunting" up/down disappear after the car has done a few miles (like 4-5) ?
If it does, it is the same as I had over my ownership of my first X350, and I drove the car from 30k to 115k and the syndrome was there when I part-exed it for an X358 that doesn't have it. I was told it was a "clever wheeze" by some engineer to cycle the torque converter lock-up clutch to create a bit of friction to warm up the transmission fluid quicker. I just used to put the transmission in 5 or even 4 for a bit.